Vibrator.



P. L JOECKEN.

VJBRATOR. APPUCATON FIL'ED JUNE 18, 1914.

Patentd Man 7,1916.

2 SHEETS-SHEETI P. J. JOECKEN.

VIBRATOR.

APPLICATION FILED JUNE 18, 1914..

Pntented Mm. 7, 1916.

2 SHEETS -SHEET 2- ME M M a. M F 1 i 2 w M .E

' .STS

PEIE J. JOLECKEN, on 'CLEVELAND, 0H10.

Ta aZl whom it ma u concern:

Be it known that I, PETER J. JOECKEN, a citizeri of the United States, and a resident of Cleveland, in the county of Cuyahoga and State of Ohio, have made certain new and useful Improvements in Vibrators, of which the following is a specification.

My invention is an improvement in vibrators, and has for its object to provide a device of the character specified, operating by fluid under pressure, and wherein a cylinder is provided, and a piston in the cylinder, and wherein valve mechanism is provided in connection with the cylinder for operating the piston, t0 positively force the same in opposite directions.

In the drawings: Figure lis a side view of the improvement with the cylinder in section, Fig. 2 is a top plan view with the valve.

controlling mechamsm in section, Fig. 3, is a longitudinal section of the cylinder, Fig. 4 is a top plan view of the piston, Fig. 5 is an end view of the same, Fig. 6 is a front view of the valve c0ntrolling mechanism with the head remoi ed, Fig. 7 is a longitudinal section of the same at right angles to Fig. 2, and Fig. 8 is a perspective view of the controlling valve.

.The present embodiment of the inventioncomprises a Cylinder1, having a central bore 2, which Communicates at its ends with enlargements 3 and 4, and the bore of the cylinder is provided With three internal grooves 55 and 5 respectively, each of which is provided with a radial port 6-6 and 6 respectively.

A clamp 7 75 provided at one end of the cylinder t0 permit the vibrator to be connected to the pattern plate in the mold, and the piston 8 is arranged within the cylinder, fitting the same, and the ends of the piston are reduced annulafly, as indicatedat 9 and 9 The piston is also provided with two annular grooves 10 and 10 intermediate its ends. The grooves 10 and 10 and the reduced portions 9 and 9 are spaced apart a distance corresponding to the spacing of the grooves 55 and 5", and cylinder heads 11 and 12 are threaded into the ends of the cylinder; The head 11 is provided With a reduced threaded portion 11, which nasses through a threaded opening in the adjacent end of the cylinder, and the shoulder formed between the reduced portion and the body engages the outer face of the end of the cyl- Specification of Letters Patent.

' molding machine,

. PatentedMai. 7, 1916.

Application filed Jnne 18, 1914. SerialNo. 845,847.

inder. The head 11 is also' provided with another plam reduced portion 11 at its inner end, and the head 12 is provided with an annularrib 12 intermediate the plain portion and the threaded portion, and the; pla1n portion of the head isWithinthe enlargement 4, the rib 12 engaging the inner to be secured t0 a fixed support. and.the

casing is provided Witha longitudinallyextending opening 16, and atone end the opening -is counterbored or enlarged, as shovvn at 17. A head 18 is secured to the said end of the cylinder, by means of screw bolts 19 or the like, and adisk valve 20 is arranged within the counterbore or enlargement, the said valvehaving oppositely arranged transverse openings or ports 21.

The disk valve is also provided .with an axial stem 22, Which extends beyond the opposite end'of the casing, and an operating lever 23 is secured tothe said end, thelever having a hub or bearing 24 for receiving the stem. The inner end of thebearing is chambered, as shown at 25, and a coil spring 26 is arranged within the chambered portion, encircling the stem, and connected at one end to the casing and at the other to the hub. The casing is provided witli an inlet pipe 27, and with supply pipes 28 and 29 respectively. The pipes 28 and 29are The operation of the improved vibrator is as follows: Vhen the cylinder is attached to the pattern plate by means of the clamp 7, and the handle 23 is manipulated to turn the valve 20, the piston Will be reciprocated. The ports 21 of the valve 20 are designed to register with the ports 28 and 29 of the casing, to connect the said ports with the source of supply 27. The molder operateS the lever 23 with his knee, and the -spring 26 .aets normally to hold the valve in closed position. The base 14: is connected to the by screws or the like Which are passed through the opnings 15. The ports 21 are not arranged diametrically of the disk, and they cannot register simulconnected to the cylinder at the enlargement taneously with the ports 28 and 29 but in alternation. When the valve is moved to connect the port 28 with the supply of fluid under pressure by way of the pipe 27, the fluid under pressure is admitted through the pipe 28 to the enlargement 3 of the eylinder, and the piston is driven to the right of Fig. 1, as shown, engaging the head or bumper 12 of. the vibrator. \Vhen the piston reaches the end of its stroke the port 6 is open, the reduced end 9 of the piston being at the port, and the fluid under pressure escapes. The piston 8 is provided with channels 30 and 30 leading from the respective ends thereof and opening laterally at the annular grooves 10 and 10 respectively. 'When the piston is in the position of Fig. 1, not only is the end adjacent to the head or bumper 11 in communication with the atmosphere by way of the port 6, but also by way of the channel 30 and the port 6". Vhen the lever 23 is moved to bring one of the ports 21 in registry with the port 29 the fluid under pressure passes by way of tliese ports and the pipe 29 to the port 6*, and by way of the groove 5 and the channel 30 to the enlargement 4 of the cylinder, and the piston is driven in the opposite direction, contacting with the bumper 11. When the piston reaches the end of its travel toward the left of Fig. 1, the reduced portion 9 is at the port 6" and the end 4 of the cylinder is connected with the atmoSphere by way of the said port, and by way of the channel 30, the groove 5 andthe port 6. Thus a repetition of these movements of the valve 20 Will alternately connect the ends of the c vlinder with the source of fluid under pressure and the piston Will be operated to alternately engage the bumpers 11 and 12, to vibrate the pattern plate in the mold. henever the lever 23 is released the spring 26 returns it to normal position, as shown in Fig. 1.

In Fig. 3 the clamp 7 is omitted, the ends of the cylinder being closed by a head 31, having an internally threaded opening 32 for receiving the bumper 12. Fig. 3 also shows the piston repelledfrom the bumper 12 and in a position to cover port 6'so as not to admit air into channel 30 or 230 consequently no reciprocating motion of the piston. For the purpose of sending the piston to bumper 12 (before opening port 29 in valve casing) port 28 is opened, to let air throngh the pipe 28 between bumper 11 and piston 8. Port 28 is closed, before port 29 is opened to admit air to port 6 forthe purpose of vibrating the piston 8. This Will explain why the port 28 and pipe 28 leading into the enlarged space 3 is necessary to insure a surevibrating motion of piston 8. VVithout this the vibratoris worthless.

Vith the parts in the position of Fig. 1, the motive fiuid enters the controlling valve casing from the pipe 27 and passes into the pipe 29 which at this time is in register with one of the ports 21 of the valve. The motive fiuid enters the cylinder 1 by way of the port 6, and passes around the groove 5 to the opening of the passage 30 and passes by way of this passage to the enlargement or chamber 4 of the cylinder. The motive fiuid acting on the piston drives it in the opposite direction causing the piston to strike the stop or bumper 11*. As the piston reaches the bumper or stop 11", the end 9 of the piston passes the port 6", permitting the motive fiuid to pass by way of this port. At the same tiine the inner end of the passage 30 registers with the groove 5, and the motive fluid ma v also pass through the exhaust port 6. At the same time the inner end 'of the passage 30 registers with the port 6 and the motive fiuid from the pipe 29 passes by way of the port 6*, and the passage 30 to the. cl1amber 3, and the piston is imnwdiately driven in the opposite direction, contacting with the stop 12. Vhen this occurs the motive finid in the chamber 3 ma v exhaust by way of the passage 30 and the port 6". and also by way of the groove 5 and the passage 6. As long as the motiv fluid is admitted to the pipe 29 this reeiprocation will continue. \Vere no means provided forpreventing the. .same the piston would invariahly tako an intermediate position out of contact with either disconnected. In this position of the piston the port 6 would be out of register With the passages 30 and 30, and it would l)e nocessary to discoi1nect the parts to return the piston to one end or the other in order that it '.night be again brought into operation. This state of affairs is prevented by providing means for placing the piston in such position that one of the. passages 30 or 30 will register with the port 6?. This is brought about by swinging the valve 20 to connect the pipe 27 with the pipe 28. The motive fluid now passes by way of the pipe 28 to the chamber 3. driving the piston tmvard the stop 12 lrVhen noW the valve 20 is nioved to close the pipe 28 and open the pipe 29 the piston wvill again commence its reciprocating motion. The arrangement of the pipe 28 is especially designed to eliminate stopping of the piston on the dead conter.

I daim:

l. A vibrator, comprising a cylinder for attachment to a pattern, and a piston mounted to vil rate within the cylinder, the evlinder having an inlet port intermediati; its ends and an exhaast port near eacl1 end and arranged to be uncovered by the piston as it strikes the opposite ends of the. rvlinder, the piston being'ported to connect the inlet port with ea eh end of the cylinder, as the piston strikes the said end and to connect the opposite end of the cylinder to the exhaust' port remote from the said end, the cylinder stop 11 or 12 xvhen the pipes 27 and 29 were having an auxiliary inlet port at one end, a contiolling valve for controlling the admission of the motive fluid to the cylinder, and

having outlet ports connected to and dom-- ends and an exhaust port -near each end and arranged to be uncovered by the piston as it strikes the opposite end of the cylinder, the piston being ported to connect the inlet port with each end of the cylinder as the piston strikes the said end and to connect the opposite end of the cylinder to theexhaust port remote from the said end, the cylinder having an auxiliary inlet port at one end, a

controlling valve for controlling the admis sion of the motive fluid to the cylinder, and

having outlet ports connected to and communicating with the inlet ports of the cylinder, and having an inlet port for connectiofi with a source of supply, and a valve in the casing having means for alternately connecting the outlet ports with the inlet port.

3. A vibrator comprising a cylinder for attachment t0 a pattern, and a piston mounted to vibrate within the cylinder, the cylinder having an inlet port intermediate its ends and an exhaust port near each end and aITanged to be uncovered by the piston as it strikes the opposite end of the cylinder, the piston being ported to connect the inlet port with each end of thecylinder as the piston strikes the said end and to connect the opposite end of the cylinder to the eX-' haust port remote from the said end, the cylinder having an auxiliary inlet port at one end, and a controlling valve for controlling the admission 'of the motive fluid to the cylinder.

4:. A vibrator, comprising acylinder for attachment to a pattern, and a piston mounted to vibrato within the cylinder. the cylinder having an inlet port intermediate its ends and an exhaust port near each end and arranged to be uncovered by the piston as it strikes the opposite end of the cylinder, the piston being ported to connect the inlet port with each end of the cylinder as the piston strikes the said end and to connect the opposite end-cf the cylinder to the exhaust port remote frein the said end, the cylinder having an auxiliary inlet port at one end.

5. A vibrator, comprising a cylinder for attachmezit to a pattern, and a piston mounted to vibrate within thecylinder, the cylindei having an inlet port intenmediate its ends and an exhaust port near each end and arranged to be uncovered by the piston as it strikes the opposite end.of the cylinder, the piston being ported to connect the 1nlet port with each end of the cylinder as the piston strikes the said end and to connect the opposite end of the cylinder to the exhaust port remote from the said opposite end.

6. A vibrator, comprising a cylihder having its ends annularly enlarged to form chambersat the ends thereof, and having an inlet port intermediate its ends and an exhaust port between each chamber and the inlet port, said cylinder haVing an inlet port at one of the chambers,a piston mounted to reciprocate' in the cylinder, the cylinder having stops for engagement by the ends of the piston at each end thereof and extending into the adjacent chamber, said piston being ported to connect the first named inlet port with the chamber adjacent to the advanced "end of the piston, and to connect the opposite end of the cylinder to the exhaust, and a controlling valve for controlling the admission of the motive fluid to either inlet ort. p 7. A vibrator, comprising a cylinder, a piston Within the cylinder, said cylinder having a central inlet port, and an annular internal groove at the port, and having an enlargement at each end of the cylinder, the piston being ported to connect the inlet port groove to that end of the cylinder adjacent to the advanced end of the piston, said cylinder having a second inlet port -at one end and communicating. with the adjacent enlargements, and a c0ntrolling valve for admitting motive fluid to either inlet port.

8. A vibrator, comprising a cylinder having means for connecting the same to the object to be vibrated, a piston Within the cylinder, said cylinder having an inlet port intermediate its ends, and having an enlargement at each end of the cylinder, the' piston being ported to connect the inlet port to that end of the cylinder at Which the piston is When the ports thereof are in register with the inlet port, said cylinder having a second inlet port at one end and communicating with the enlargement, a controlling valve for connecting the inlet ports to a source of fluid under pressre, saidvalve comprising a casing having an inlet port for connection with the source, and having otlet ports connected with the inlet poits of the cylinder, a valve in the casing, and having passages for alternately connecting the inlet port with the outlet ports, a spring acting normallv to move the valve out of register with either port, said valve being manually operated to move it in the opposite direction.

9. A vibrator, comprising a cylinder having means for connecting the same to the object to be vibrated, a piston Wthilf the cylinder, said cylinder having an inlet port intermediate its ends and having an enlargement at each end of the cylinder, the piston being ported to connect the inlet port to that end of the cylinder at Which the piston is when 'the ports thereof are in register With the i nlet port, said cylinder having a second inlet port atone end and communicating with the enlargement, a controlling valve comprising a casing having un inlet port for connection With a source of fluid under pressure, and having outlet ports for connection with the inlet ports of the cylinder, and a valve in the casing having means for connecting the inlet port With' ither outlet port.

10. A vibrator, comprising a cylinder, a piston wthin the cylinder, said cylinder having an inlet port intermediate its ends, and having an enlargement at each end of the cylinder, the piston being pdrted to connect the inlet port to that end of the cylinder at; which the piston is When the ports thereof are in register with the inlet port, said cylinder having a second inlt port at one end and communicating W1bh the enlargement, and a controlling valve having means for connectingeither inlet port With a source of fluid under pressure.

PETER J. J OECKEN. Vitnesses:

GEO. W. ANGELL, JOSEPH H. FRICK. 

